Kate Middleton Reignites Pregnancy Rumors at Gary Barlow Concert

Will 2012 be the year KateMiddleton and Prince William become parents?

At Tuesday's Gary Barlow concert in support of the Prince's Trust, the 29-year-old Duchess looked radiant in a $99 lace tulip dress by Zara. Middleton completed her ensemble with black tights, suede pumps and a blazer by Ralph Lauren.

Middleton did little to squash pregnancy rumors while posing for pictures with William, PrinceCharles and Camilla Parker-Bowles at Royal Albert Hall. The beaming brunette held a black clutch in front of her stomach at all times, adding to speculation that she's with child. See more pics of William and Kate at the concert.

Middleton first fueled pregnancy rumors when she refused peanut paste during her visit to a Denmark UNICEF distribution center in November. (Although Middleton is not allergic to peanuts, pregnant women are often advised to avoid peanut products to prevent allergies in their babies-to-be.)

At the time, a spokesman for the couple told Us Weekly the policy is "to never confirm or deny [pregnancy] rumors," but an insider insisted: "If and when there is an announcement to make, it will be made by the palace as soon as it's safe to."

Money from Tuesday's concert will benefit UK City Riots Appeal, which helps disadvantaged youths rebuild their lives and communities.